Cylinder-control mechanism



Dec. 29 1925.

. 1,567,361 E. F. DUDLEY CYLINDER GNTROL MECHANISM Filed March 25, 1922 2 Sheets-Sheet 1 haw: [ward/ .564%

Dec. 29, 1925. 1,567,361

-. E. F. DUDLEY CYLINDER CONTRQL MECHANISM Filed March 25, .1922 2 Sheets-Sheet 2 Patented Dec. 29, 1925;

" NI ED SM S PATENT I IEID'iITAIRIIJ DUDLEY, OF OAK PARK; ILLHIOIS, ASSIGNOB 'I'O MIEHLE PRINTING PRESS 8a MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

CYLINDER-CONTROL MECHANISM.

application filed larch 25, 1922.- Serial in. 546,607.

To all whom it may concern:

Be it known that I, EDWARD FtDunnnr, a citizen of the United States, residing at Oak Park, in the county of Cook and State of 5 Illinois, have invented certain new'and use--v ful Improvements in Cylinder-Control Mechanism, of which the following is a specification. I

This invention relates to printing presses and more particularly to cylinder control mechanism therefor. Whilethis invention is not limited to a vertical type; of printing press, it is disclosed in connectionwith such a printing press in which the type bed and the cylinder reciprocate vertically in opposite directions in a manner .suc'zhthat when. the cylinder moves upwardly andthe type bed moves downwardly, the cylinder is locked to .its

causing a sheet of material carried thereby to receive an impression. However, when the movements are reversed, that is, when the c linder is moved downwardly and the type ed u wardly, the cylinder is unlocked from its riving mechanism so that said cylinder does not rotate in its downward movement. While the cylinder normally ro- 'Letates as it moves upwardly for giving a desirable to prevent said cylinder from rotating during an upward movement if 'a sheet of material has not been fed to thecylinder or is not in with respect thereto.

Accordingly, one object of this invention is to provide simple, reliable and eificient means whereby the cylinder automatically will be prevented from being rotated in the event that a sheet is not fed to the cylinder or a sheet is not properly registered with respect thereto. Another object is to ovide cylinder control mechanism in which the parts cooperate "in an improved manner to meet-the various requirementsfor successful commercial operation.

These and other objects are accomplished by means of the arrangement disclosed on the accompanying sheets of drawings, in which- 1 v Figure 1 is a fragmentary front elevation proper front register in% my invention;

; tion will be apparent from the following driving mechanism and caused to rotate for sheet carried thereby an impression, it is of a vertical type of printing pressembodyigur 2 is'an elevational 'view of a print- 7 ing press cylinder embodying the invention;

Flgure 3 1s a fragmentary end elevation of the same cylinder; Figure 4: is a sectional view of the cylinder taken in the plane of line 4-4 of Figure 2; and

Figure 5 is a fragmentary plan view of the cylinder. showing the grippers, suction openings in the gripper bar, and a sheet of material being fed to the cylinder grippers.

The various novel features of the invendescription an drawings, and will heparticularly pointed out in the appended claims. 7

Referring to the figures of the drawings, it. will be noted that the invention is illustrated in connection with a vertical type of prmtmg press including a main frame 10 u on which is mounted-the way frame inc uding way frame members 11 and 12 in which the type bed, not shown, and the cylinder frame 13, are 'vertical1y ;slidably mounted in simultaneous reciprocation in OPPOSIUP- directions, a cylinder 14 being rotatablymounted in the cylinder frame 13: v

This invention has to'do primarily with cylinder control mechanism. In th1s connection it will be noted that the cylinder 14 is provided with a grip er bar 15 in which the grippers 16 are slnfably mounted, each gripper normally being held closed by a sprmg 17 coiled around the shank of each gripper and interposed between the inner part of the gripper bar and a pin 18 in the shank of the gripper. The cylinder grippers 16 are opened bv means of mechanism .including operating fingers 19 mounted upon a rod 20 in the walls of'the cylinder,

one end of said rod 20 extending through one of the cylinder walls and having mounted thereon a lever 21 carrying a roller 22 which cooperates with two cams 23 and 24, the cam 23 being located at the upper part of the type bed so that when the roller 22 rides upon said cam 23 the grippers 16 are.

opened to release an impressed sheet of material preparatory to t e latter being carried away from the cylinder by delivery grippers (not shown). The'cam 24 is cats at the lower limit ofmovement of the cylinder .14 and has two cam portions 25 4 and 26. The upper cam portion 25.0pens the grippers near the end of the downward 'movement of the cylinder for the purpose of receiving a sheet of paper fed to the cyl- -inder, and the lowerca'm portion 26 of the cam 24 m to close upon the sheet of materia ermit the roller 22 to ride downwardly t ereon for permitting the grp rs e to .z-the cylinder; At first blush it would seem that, the roller, 22 in the next upward move- 'ment of tl1 c cylinder would engage the movement of the cylinder a gear 27 is vided at one end of the cylinder, and it is, loosely mounted with respect to the cylinder and the parts thereof, so that it is possible for the gear-27, to be rotated while the cyl- 'inder may not be rotated. The gear 27- is actuated during its upward and downwaid movement with the cylinder by 'meshing with a rack 28 carried by the type bed. Se-

- cured toy or formed integrally with the gear 27 is a. ratchet wheel 29 having a single slot '30- which is adapted to receive the hooked end 31 of a pawl 32 mounted upon a shaft 33 carried by the cylinder.. This shaft has surrounding it a coiled spring 34, one end of which is anchored to a wall of the cylinder and the o her end of which is anchored to a'collar 35 secured to the shaft in a manner such that the pawl is yieldably held against the ratchet'member 29 and, as a result ther of, at'anytime that the slot 30.

is presented to the hooked portion 31 of the pawl 32 suchpawl enters said slot for lockmg the cylinder to its driving mechanism for rotating said cylinder.

Attention is called to the fact that the slot ovidedwith a straight driving wall 36 which is adapted to'engage a correspond- I ing front 'wall- 37 of the pawl for positively driving the cylinder in a counterclockwise direction as viewed in Figure 4. The other wall 38 of the .slot 30 is inclined, as is also the corresponding wall 39 of the'pawl 32, whereby the pawl may be 'forced out of the slot 30 of the ratchet wheel 29 when the cylinder has reached its upper limit of move -;ment preparatory to said cylinder moving vertically downwardly without rotating.- However, the inclination of the walls 38 and .39 of the slot 30 and pawl 32, respectively,-

are sufficiently abrupt to prevent the cyl;

inder running away from the gearduring their rotatlve movements. In connection with the control mechanism for the cylinder, attention is called to the fact that secured to the shaft 33 is a disk40- having a single notch 41 engaged by a pawl 42 secured to one arm 43 of a bell crank' lever 44 carried by any suitable supports 45, the other arm 46 of the bell crank lever bem connected to a rod 47 in turn operative y connected to a diaphragm 48 of a casing 49 forming part of a fluid pressure .s stem. The interior of'said casing beyond t e diaphragm 48 is connected to a source of vacuum through a tube 50, said casing 50 49 also having extended therefrom a plurality of tubes 51 and 52 which are operatively connected with two series 53 and 54 of suction openings extending through the gripper bar-15, At' the time thatthe cyl- 55 inder is at its lower limit of movement preparatory toreceiving a sheet of material, the suction pump is in communication or is cut into communication with the dia hragm 1 d down-9"- wardly through the two' series 53 and 54 I chamber 49, so that suction is exerte of openings in the gripper bar. and through the tubes 51 and 52 and diaphragm chamber .49 and tube 50. If the openings 53 and 54 are left uncovered at such time, it is apparem; that the flow of air through the diaphragm chamber49-will have no effect upon the diaphragm and, accordingly, will not transmit any movement to the bell crank lever 43 and accordingly the pawl 32 will beheld or locked out of operative relation: ship with respect to the ratchet wheel 29, so

that if no sheet of pa er is fed to the cylinder,'or if the sheet 0 paper fed to the cylinder does not cover the openings 53 and 54.

the cylinder'will not become locked to its rotative or driving mechanism; As a result, the cylinder on its next upward movement and under the conditions stated, will- :1" not rotate. On the other hand, if the suc- U9 tion 0 nings 53 and 54in the gripper-bar" I were 0 osed by a sheet-of material 55 which is fed to the cylinder and registered with respect thereto, it. is apparent that the diaphragm 48 would-be -moved into the I chamber 49, drawing the pawl 42 away from the disk 40, thereby releasing the pawl 32 dis 29 when they come into register with eachother, hereby resulting in the cylinder 14 being rotated by itsdriving mechanism: durin the'next upward movement of the cylin er. The series of openings -53 and- -54 are arranged in a straight line and the forward most points of the openings lie in the. line of front register drawn between the points of 'front register. In other words, the openings are advanced as far forward [as possible so that the openings form a real front register detector.

rmit it to pass into the-slot 30 in the I Itis apparent, therefore, that the rota- "tion," of. the cylinder 'during its upward movement is dependent u on and controlled by a sheet of material being registered with,

respect to the cylinder. 3 u

It my intentionito cover all modifiv cationsof theinventionfalling within the i s i e -sears Pfhe qi ns c m .-.;Iclaim; 1-, In sprinting press, the combination lfof' a cylinder, means .for' rotating said cyll inder, and means whereby the-rotative move- 'ment of said cylinder depends upon the .rproperaregistfation of a -s set of material relativeto said cylinder. I

, r ,2. Ina printing press, the "combination of a cylinder, means for actuating said cylinder, "land means whereby the actuation of said.

cylinder depends upon the proper registrationiof a sheet otmaterial relative to .said 3. In a printing press, the combination of a cylinder, means for rotating said cylinder,

"and control means carried by said cylinder operative. in accordance with registration conditionsof a sheet of material with respect to said cylinder for controlling the rotative movement of the latter. J 4. In a rinting press, the combination of a cylin er, driving means therefor, and

fluid pressure means responsive to registerting' conditions of sheet material with {respect to said y the rial wit driving relationship: between. said driving means and cylinder.

5'. In a printing vpr thd coinbination 6 of a cylinder, drivingmeans therefor including a' ratchet member and a pawl, and means for controlling the drivin connection betwee'n'said ratchet and paw dependent upon the.proper registration offa sheet of-Inaterespectto said cylinder; 6;. In a printing press, the combination of it cylinder driving means therefor including a ratcli means controlling the connection at and pawl, and fluid ressure etween said ratchet and pawl operable inaaccordance-with proper registration of a sheet of material with respectto saidcylinder,

7. In a printing press,'the combination of a' cylinder having a'gripperbar and grip:

pers, driving means for said 0 lmder, and

. "means for controlling the driving relationshi between said driving means and c 1- f and grippers and the P 1 6 regime!!! of in er dependent upon the reception 0 a sheet of material between said gripper bar v saidsheet at said grippers;

, said 8. In a printing press, the combination ofa cylinder having gripper bar driving means for said 0 linder, and fluid pressure means associate with said grip erbar whereby b the driving relationship upon the eeding of a sheet of material to gripper bar and the proper registration 1 of said sheet at the gripper bar.

a cylinder having a gripper bar with fluid pressure 0 enings therein, driving means or said cy inder, and means for controlling the driving relationship of said means and cylinder depending upon a sheet of-material being (placed completely over the openings of a cylinder, gripper mechanism thereforv having fluid pressure openings associated therewith, drivin mechanism for said cyL inder, and a fluid pressure diaphragm operatively associated with said gripper inech anism for controlling the driving relationship between said drivingmeans and cylinder in a manner such that when a sheet of etween said drivin means and cylinder is dependent 9. In a printing press, the combination of material does not cover said fluid pressure openings the cylinder will not be driven and if said fluid pressure openings are covered said cylinder will be driven.

12. In a printing press, the combination of a cylinder, gripper mechanism therefor having fluid pressure openings associated therewith -means for rotating said cylinder, and a fluid pressure diaphragm operatively associated with said grip er mechanism for controlling the driving re ationship between said rotating means and cylinder in a manner such that when a sheet of material does not cover said fluid. pressure openings the cylinder will not be rotated and if said fluid pressure openings are covered said cylinder will be rotated. l

Si ed at Chicago, Illinois, this 2nd day of arch, 1922.

, p EDWARD r. DUDLEY.

Ill) 

